Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 8 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/05/2020   09:52:44   (  -0.01,-128.34) (  -0.23,-127.29)  120.24                80
 08/06/2020   22:14:42   (   0.01,-128.27) (  -0.95,-132.59)  492.44                80
 08/07/2020   21:58:37   (   0.01,-128.26) (   0.04,-128.06)   22.55                80
 08/10/2020   10:01:42   (  -0.00,-128.28) (   0.08,-128.81)   60.05                80
 08/11/2020   09:40:18   (  -0.00,-128.26) (  -0.91,-124.27)  454.41                80
 08/12/2020   22:02:14   (   0.01,-128.17) (  -0.33,-129.57)  159.58                80
 08/13/2020   21:46:10   (   0.01,-128.15) (   0.72,-125.05)  354.48                80
 08/15/2020   10:05:19   (  -0.01,-128.17) (   0.46,-130.32)  244.11                80
 08/16/2020   09:49:14   (  -0.01,-128.15) (  -0.54,-125.78)  269.38                80
 08/17/2020   22:08:32   (   0.01,-128.05) (  -0.64,-131.09)  346.07                80